Hilum Of The Lung

Question 1

What are the roots of the lungs?

Answer 1

Several structures that the lungs attach to the heart and trachea by

Question 2

Define the hilum

Answer 2

The area in which the roots enter and leave the lung

Question 3

What are the structures that make up the root of the lung and enter and leave at the hilum?

Answer 3

A pulmonary artery, two pulmonary veins, a main bronchus, bronchial vessels, nerves and lymphatics

Question 4

What happens at the hilum?

Answer 4

The visceral pleura reflects to become the parietal pleura

Question 5

What are the exact position of the structures at the hilum?

Answer 5

Can vary BUT, the pulmonary artery is usually more superior, the pulmonary veins are inferior and the bronchi are more posterior

Question 6

Describe wall thickness of bronchi

Answer 6

Thickets and strongest walls, they are cartilaginous and do not compress or collapse easily

Question 7

Describe wall thickness of the pulmonary arteries

Answer 7

Thinner walls than bronchi, thicker than pulmonary veins. Arterial walls are elastic and if compressed will spring back into shape on being released

Question 8

Describe wall thickness of pulmonary veins

Answer 8

Thinnest walls, they are easily collapsible and are not elastic so do not retain their tubular shape as easily